CN106704867B - A kind of flashlight lens design method of class rectangle hot spot - Google Patents
A kind of flashlight lens design method of class rectangle hot spot Download PDFInfo
- Publication number
- CN106704867B CN106704867B CN201710156610.4A CN201710156610A CN106704867B CN 106704867 B CN106704867 B CN 106704867B CN 201710156610 A CN201710156610 A CN 201710156610A CN 106704867 B CN106704867 B CN 106704867B
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- Prior art keywords
- lens
- plane
- fresnel
- rotational symmetry
- hot spot
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/006—Refractors for light sources applied to portable lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Telephone Set Structure (AREA)
Abstract
System of the present invention provides a kind of flashlight lens design method of class rectangle hot spot, comprising the following steps: setting lens are Fresnel Lenses, and the plane of incidence is equipped with Fresnel lines, and exit facet is smooth；The plane of incidence is equipped with n group Fresnel lines, n≤1；A rotational symmetry plane space is taken in the plane of incidence, and plane right-angle coordinate x-y is set on rotational symmetry plane space；Fresnel lines in lens is along x-axis or y-axis at axial symmetry relationship；One group of Fresnel lines is taken, a Fresnel lines has been arranged through in the x-axis direction in rotational symmetry plane space, b Fresnel lines has been arranged through on the y-axis direction in rotational symmetry plane, a > 1, b > 1, a, b are integer；A ≠ b is set.The lines non-rotational symmetry of flashlight lens is arranged in the present invention, and the hot spot of formation is compressed or stretched in a dimension, and the rectangular field that can be shot with mobile phone matches, and can effectively improve the utilization rate of energy.
Description
Technical field
The present invention relates to flashlight lens fields, specifically disclose a kind of flashlight lens design side of class rectangle hot spot
Method.
Background technique
The luminous efficiency of LED is high, power consumption is small, long service life, safety, is a kind of reliable light source of environmental protection, answers extensively
For each display lighting area.Mobile phone is essential tool in the modern life, has merged various functions, wherein
One is exactly camera function, is taken pictures in the environment of insufficient light, and the cooperation of flash lamp is needed, and mobile phone flashlight is usually
LED chip fit lens use.
Existing flashlight lens include one or plurality of LEDs chip, are combined with round or rectangular lens, lens one
As all use Fresnel Lenses, corresponding lines is substantially circular Fresnel line, finally formed illumination light in single LED
Spot be all close to circular symmetrical hot spot, and mobile phone shooting photo, image largely be all rectangle image, use flash lamp
When with the use of mobile phone shooting function, as shown in Figure 1, the illumination zone of flash lamp is greater than the visual field of camera, lead to flash lamp
The efficiency of light energy utilization it is lower.
Summary of the invention
Based on this, it is necessary to it is directed to prior art problem, a kind of flashlight lens design method of class rectangle hot spot is provided,
Make the hot spot to be formed in class rectangle, the visual field that shape can be shot with mobile phone matches, and the utilization rate of luminous energy is high.
For solve prior art problem, the present invention disclose a kind of class rectangle hot spot flashlight lens design method include with
Lower step:
A, setting lens are Fresnel Lenses, and the plane of incidence is the male and fomale(M&F) equipped with Fresnel lines, and exit facet is smooth
Plane；
B, the plane of incidence is equipped with n group Fresnel lines, and n≤1, n are integer；
C, a rotational symmetry plane space, the central point of rotational symmetry plane space and the center of lens are taken in the plane of incidence
Point is overlapped, and plane right-angle coordinate x-y is arranged on rotational symmetry plane space；
D, the origin of plane right-angle coordinate x-y is overlapped with the central point of lens, the Fresnel lines in lens along x-axis or
For y-axis at axial symmetry relationship, Fresnel lines is coherent texture structure；
E, one group of Fresnel lines is taken, a Fresnel has been arranged through in the x-axis direction in rotational symmetry plane space
Lines has been arranged through b Fresnel lines on the y-axis direction in rotational symmetry plane, and a > 1, b > 1, a, b are integer；
F, a ≠ b is set；
G, the compressed field orientation of the lens direction relatively narrow with mobile phone shooting visual field is matched into setting, after lens are stretched
Field orientation and mobile phone the shooting wider direction of visual field match setting.
Further, the n in step B is specially even number.
Further, it is specially to take a circular plane that a rotational symmetry plane space is taken in step C.
Further, step F is specially that b > a is arranged.
Further, step G specifically: the x-axis direction of lens is matched with wider direction in mobile phone shooting visual field and is set
It sets, the y-axis direction of lens is matched into setting with direction relatively narrow in mobile phone shooting visual field.
The invention has the benefit that the present invention discloses a kind of flashlight lens design method of rectangular light spot, setting is dodged
The hot spot of the lines non-rotational symmetry of light lamp lens, formation is compressed or is stretched in a dimension, can form non-rotational symmetry
Class rectangle hot spot, can with mobile phone shoot rectangular field match, so that the emergent light of LED chip is focused mostly in effective lighting area
In domain, the utilization rate of energy can be effectively improved, hot spot will reach same brightness and uniformity, it is only necessary to smaller power, energy
Enough effectively reduce the loss of energy.
Detailed description of the invention
Fig. 1 is the relation schematic diagram of the hot spot formed in the prior art and mobile phone shooting visual field.
Fig. 2 is the hot spot schematic diagram that flash lamp is formed in the prior art.
Fig. 3 is the relation schematic diagram that the hot spot that the present invention is formed and mobile phone shoot visual field.
Fig. 4 is the hot spot schematic diagram that the present invention is formed.
Fig. 5 is the structural schematic diagram of the embodiment of the present invention one.
Fig. 6 is the structural schematic diagram of the embodiment of the present invention two.
Specific embodiment
To further understand the features of the present invention, technological means and specific purposes achieved, function, below with reference to
Present invention is further described in detail with specific embodiment for attached drawing.
Referring to figs. 1 to Fig. 6.
The present invention discloses a kind of flashlight lens design method of class rectangle hot spot, comprising the following steps:
A, setting lens be Fresnel Lenses, the plane of incidence be the male and fomale(M&F) equipped with Fresnel lines, if Fresnel lines by
Dry concentric circles composition, exit facet are smooth plane；
B, the plane of incidence is equipped with n group Fresnel lines, and n≤1, n are integer；
C, a rotational symmetry plane space, the central point of rotational symmetry plane space and the center of lens are taken in the plane of incidence
Point is overlapped, and plane right-angle coordinate x-y is arranged on rotational symmetry plane space, it is preferable that takes a rotational symmetry plane
Space is specially to take a circular plane；
D, the origin of plane right-angle coordinate x-y is overlapped with the central point of lens, the Fresnel lines in lens along x-axis or
For y-axis at axial symmetry relationship, Fresnel lines is coherent texture structure；
E, one group of Fresnel lines is taken, a Fresnel has been arranged through in the x-axis direction in rotational symmetry plane space
Lines has been arranged through b Fresnel lines on the y-axis direction in rotational symmetry plane, and a > 1, b > 1, a, b are integer；
F, a ≠ b is set；
G, the compressed field orientation of the lens direction relatively narrow with mobile phone shooting visual field is matched into setting, after lens are stretched
Field orientation and mobile phone the shooting wider direction of visual field match setting.
Embodiment one designs flashlight lens by means of the present invention, and setting flashlight lens are Fresnel Lenses, enters
Penetrating face is the male and fomale(M&F) equipped with Fresnel lines, and exit facet is smooth plane, and two groups of Fresnel lines are arranged in the plane of incidence,
Using the central point of entire lens as the center of circle, a circular plane is taken, and plane right-angle coordinate x-y is set in the plane, is put down
The origin of face rectangular coordinate system x-y is overlapped with lens centre point, and two groups of Fresnel lines are respectively arranged to the left and right two of y-axis
Side, the Fresnel lines in x-axis or y-axis, lens is all at axial symmetry relationship；Take plane right-angle coordinate x-y one, four-quadrant
In Fresnel lines group, the Fresnel lines that x-axis passes through is a item, and the Fresnel lines that y-axis passes through is b item, b > a, it is entire thoroughly
Mirror is stretched in the direction of the x axis, is compressed in the y-axis direction, by wider side in the x-axis direction of lens and mobile phone shooting visual field
It is arranged to matching, the y-axis direction of lens is matched into setting with direction relatively narrow in mobile phone shooting visual field.
Embodiment two designs flashlight lens by means of the present invention, and setting flashlight lens are Fresnel Lenses, enters
Penetrating face is the male and fomale(M&F) equipped with Fresnel lines, and exit facet is smooth plane, and one group of Fresnel lines is arranged in the plane of incidence,
Using the central point of entire lens as origin, a circular plane is taken, and plane right-angle coordinate x-y is set in the plane, is put down
The origin of face rectangular coordinate system x-y is overlapped with the central point of lens, and setting Fresnel lines is one group with center ellipse, same to center
Elliptical central point is overlapped with the central point of lens, is all located in x-axis with the elliptical bifocal in center, along x-axis or y-axis, lens
In Fresnel lines all at axial symmetry relationship；The Fresnel lines that x-axis passes through is a item, and the Fresnel lines that y-axis passes through is b
Item, b > a, entire lens are stretched in the direction of the x axis, are compressed in the y-axis direction, and the x-axis direction of lens and mobile phone are shot
The y-axis direction of lens is matched setting with direction relatively narrow in mobile phone shooting visual field by wider direction matching setting in visual field.
A kind of flashlight lens design method of class rectangle hot spot of the invention, the lines that flashlight lens are arranged is non-rotation
Turn symmetrical, form one and pull up the hot spot stretched or compressed in certain dimension, non-rotationally-symmetric class rectangle hot spot can be formed,
It can effectively be matched with the rectangular field realization of mobile phone shooting, the light being emitted from LED chip is made to concentrate on the view of mobile phone shooting
In, the utilization rate of luminous energy can be effectively improved.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (5)
1. a kind of flashlight lens design method of class rectangle hot spot, comprising the following steps:
A, setting lens are Fresnel Lenses, and the plane of incidence is the male and fomale(M&F) equipped with Fresnel lines, and exit facet is smooth plane；
B, the plane of incidence is equipped with n group Fresnel lines, and n≤1, n are integer；
It is characterized in that, further comprising the steps of:
C, a rotational symmetry plane space, the central point of rotational symmetry plane space and the central point weight of lens are taken in the plane of incidence
It closes, and plane right-angle coordinate x-y is set on rotational symmetry plane space；
D, the origin of plane right-angle coordinate x-y is overlapped with the central point of lens, and the Fresnel lines in lens is along x-axis or y-axis
At axial symmetry relationship, Fresnel lines is coherent texture structure；
E, one group of Fresnel lines is taken, a Fresnel line has been arranged through in the x-axis direction in rotational symmetry plane space
Road has been arranged through b Fresnel lines on the y-axis direction in rotational symmetry plane, and a > 1, b > 1, a, b are integer；
F, a ≠ b is set；
G, the compressed field orientation of the lens direction relatively narrow with mobile phone shooting visual field is matched into setting, the light after lens are stretched
Field direction matches setting with the mobile phone shooting wider direction of visual field.
2. a kind of flashlight lens design method of class rectangle hot spot according to claim 1, which is characterized in that step B
In n be specially even number.
3. a kind of flashlight lens design method of class rectangle hot spot according to claim 1, which is characterized in that step C
In take a rotational symmetry plane space to be specially to take a circular flat.
4. a kind of flashlight lens design method of class rectangle hot spot according to claim 1, which is characterized in that step F
B > a is specially set.
5. a kind of flashlight lens design method of class rectangle hot spot according to claim 4, which is characterized in that step G
Specifically: the x-axis direction of lens is matched into setting with wider direction in mobile phone shooting visual field, by the y-axis direction of lens and hand
Machine shoots direction relatively narrow in visual field and matches setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156610.4A CN106704867B (en) | 2017-03-16 | 2017-03-16 | A kind of flashlight lens design method of class rectangle hot spot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156610.4A CN106704867B (en) | 2017-03-16 | 2017-03-16 | A kind of flashlight lens design method of class rectangle hot spot |
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| Publication Number | Publication Date |
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| CN106704867A CN106704867A (en) | 2017-05-24 |
| CN106704867B true CN106704867B (en) | 2019-06-11 |
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| CN201710156610.4A Active CN106704867B (en) | 2017-03-16 | 2017-03-16 | A kind of flashlight lens design method of class rectangle hot spot |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6729627B2 (en) * | 2018-04-20 | 2020-07-22 | 日亜化学工業株式会社 | Light source module |
| CN111256053A (en) * | 2020-01-23 | 2020-06-09 | 上海润廷电子科技有限公司 | Optical design method and lamp for forming uniform rectangular light spots and low glare |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202221040U (en) * | 2011-07-27 | 2012-05-16 | 联钢精密科技(苏州)有限公司 | Flashlight lens |
| CN205191482U (en) * | 2015-12-11 | 2016-04-27 | 高准精密工业股份有限公司 | Flash unit and fresnel lens thereof |
| CN205859910U (en) * | 2016-06-27 | 2017-01-04 | 东莞市度润光电科技有限公司 | A kind of flashlight lens and the double-colored temperature flash lamp of application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901998A (en) * | 2011-07-27 | 2013-01-30 | 联钢精密科技(苏州)有限公司 | Fresnel lens |
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2017
- 2017-03-16 CN CN201710156610.4A patent/CN106704867B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202221040U (en) * | 2011-07-27 | 2012-05-16 | 联钢精密科技(苏州)有限公司 | Flashlight lens |
| CN205191482U (en) * | 2015-12-11 | 2016-04-27 | 高准精密工业股份有限公司 | Flash unit and fresnel lens thereof |
| CN205859910U (en) * | 2016-06-27 | 2017-01-04 | 东莞市度润光电科技有限公司 | A kind of flashlight lens and the double-colored temperature flash lamp of application thereof |
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| CN106704867A (en) | 2017-05-24 |
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